Ok, after dissecting this car this is what I came up with. This is a 1970 built in April. The plant used medium gray primer, on the whole car, next, the firewall and cowl sections with 1/2 of the front floor pan are panted semi gloss black, the cowl sides and firewall got black seam sealed, then the car got its color coat on top of that. the red is on top of the black on the cowl saddle bags. the pics were taken with the car upside down on a rotisserie now. Someone in the 90s redid this car in yellow that is the light gray primer and yellow you see on the cowl sides